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-rw-r--r--binutils-2.25/bfd/coff-w65.c378
1 files changed, 378 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/coff-w65.c b/binutils-2.25/bfd/coff-w65.c
new file mode 100644
index 00000000..71d946cb
--- /dev/null
+++ b/binutils-2.25/bfd/coff-w65.c
@@ -0,0 +1,378 @@
+/* BFD back-end for WDC 65816 COFF binaries.
+ Copyright 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+ 2006, 2007, 2008, 2012 Free Software Foundation, Inc.
+ Written by Steve Chamberlain, <sac@cygnus.com>.
+
+ This file is part of BFD, the Binary File Descriptor library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "coff/w65.h"
+#include "coff/internal.h"
+#include "libcoff.h"
+
+#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
+static reloc_howto_type howto_table[] =
+{
+ HOWTO (R_W65_ABS8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
+ HOWTO (R_W65_ABS16, 1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, "abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
+ HOWTO (R_W65_ABS24, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "abs24", TRUE, 0x00ffffff, 0x00ffffff, FALSE),
+ HOWTO (R_W65_ABS8S8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, ">abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
+ HOWTO (R_W65_ABS8S16, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "^abs8", TRUE, 0x000000ff, 0x000000ff, FALSE),
+ HOWTO (R_W65_ABS16S8, 1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, ">abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
+ HOWTO (R_W65_ABS16S16,1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, "^abs16", TRUE, 0x0000ffff, 0x0000ffff, FALSE),
+ HOWTO (R_W65_PCR8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "pcrel8", TRUE, 0x000000ff, 0x000000ff, TRUE),
+ HOWTO (R_W65_PCR16, 1, 0, 16, FALSE, 0, complain_overflow_bitfield, 0, "pcrel16", TRUE, 0x0000ffff, 0x0000ffff, TRUE),
+ HOWTO (R_W65_DP, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, 0, "dp", TRUE, 0x000000ff, 0x000000ff, FALSE),
+ };
+
+/* Turn a howto into a reloc number. */
+
+#define SELECT_RELOC(x,howto) \
+ { x.r_type = select_reloc(howto); }
+
+#define BADMAG(x) (W65BADMAG(x))
+#define W65 1 /* Customize coffcode.h */
+#define __A_MAGIC_SET__
+
+/* Code to swap in the reloc */
+#define SWAP_IN_RELOC_OFFSET H_GET_32
+#define SWAP_OUT_RELOC_OFFSET H_PUT_32
+#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
+ dst->r_stuff[0] = 'S'; \
+ dst->r_stuff[1] = 'C';
+
+static int
+select_reloc (reloc_howto_type *howto)
+{
+ return howto->type ;
+}
+
+/* Code to turn a r_type into a howto ptr, uses the above howto table. */
+
+static void
+rtype2howto (arelent *internal,
+ struct internal_reloc *dst)
+{
+ internal->howto = howto_table + dst->r_type - 1;
+}
+
+#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
+
+/* Perform any necessary magic to the addend in a reloc entry. */
+
+#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
+ cache_ptr->addend = ext_reloc.r_offset;
+
+#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
+ reloc_processing(relent, reloc, symbols, abfd, section)
+
+static void
+reloc_processing (arelent * relent,
+ struct internal_reloc *reloc,
+ asymbol ** symbols,
+ bfd * abfd,
+ asection * section)
+{
+ relent->address = reloc->r_vaddr;
+ rtype2howto (relent, reloc);
+
+ if (((int) reloc->r_symndx) > 0)
+ relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
+ else
+ relent->sym_ptr_ptr = (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr;
+
+ relent->addend = reloc->r_offset;
+
+ relent->address -= section->vma;
+ /* relent->section = 0;*/
+}
+
+static int
+w65_reloc16_estimate (bfd *abfd,
+ asection *input_section,
+ arelent *reloc,
+ unsigned int shrink,
+ struct bfd_link_info *link_info)
+{
+ bfd_vma value;
+ bfd_vma dot;
+ bfd_vma gap;
+
+ /* The address of the thing to be relocated will have moved back by
+ the size of the shrink - but we don't change reloc->address here,
+ since we need it to know where the relocation lives in the source
+ uncooked section. */
+
+ /* reloc->address -= shrink; conceptual */
+
+ bfd_vma address = reloc->address - shrink;
+
+ switch (reloc->howto->type)
+ {
+ case R_MOV16B2:
+ case R_JMP2:
+ shrink+=2;
+ break;
+
+ /* Thing is a move one byte. */
+ case R_MOV16B1:
+ value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
+
+ if (value >= 0xff00)
+ {
+ /* Change the reloc type from 16bit, possible 8 to 8bit
+ possible 16. */
+ reloc->howto = reloc->howto + 1;
+ /* The place to relc moves back by one. */
+ /* This will be two bytes smaller in the long run. */
+ shrink += 2;
+ bfd_perform_slip (abfd, 2, input_section, address);
+ }
+
+ break;
+ /* This is the 24 bit branch which could become an 8 bitter,
+ the relocation points to the first byte of the insn, not the
+ actual data. */
+
+ case R_JMPL1:
+ value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
+
+ dot = input_section->output_section->vma +
+ input_section->output_offset + address;
+
+ /* See if the address we're looking at within 127 bytes of where
+ we are, if so then we can use a small branch rather than the
+ jump we were going to. */
+ gap = value - dot;
+
+ if (-120 < (long) gap && (long) gap < 120)
+ {
+ /* Change the reloc type from 24bit, possible 8 to 8bit
+ possible 32. */
+ reloc->howto = reloc->howto + 1;
+ /* This will be two bytes smaller in the long run. */
+ shrink += 2;
+ bfd_perform_slip (abfd, 2, input_section, address);
+ }
+ break;
+
+ case R_JMP1:
+ value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
+
+ dot = input_section->output_section->vma +
+ input_section->output_offset + address;
+
+ /* See if the address we're looking at within 127 bytes of where
+ we are, if so then we can use a small branch rather than the
+ jump we were going to. */
+ gap = value - (dot - shrink);
+
+ if (-120 < (long) gap && (long) gap < 120)
+ {
+ /* Change the reloc type from 16bit, possible 8 to 8bit
+ possible 16. */
+ reloc->howto = reloc->howto + 1;
+ /* The place to relc moves back by one. */
+
+ /* This will be two bytes smaller in the long run. */
+ shrink += 2;
+ bfd_perform_slip (abfd, 2, input_section, address);
+ }
+ break;
+ }
+
+ return shrink;
+}
+
+/* First phase of a relaxing link. */
+
+/* Reloc types
+ large small
+ R_MOV16B1 R_MOV16B2 mov.b with 16bit or 8 bit address
+ R_JMP1 R_JMP2 jmp or pcrel branch
+ R_JMPL1 R_JMPL_B8 24jmp or pcrel branch
+ R_MOV24B1 R_MOV24B2 24 or 8 bit reloc for mov.b */
+
+static void
+w65_reloc16_extra_cases (bfd *abfd,
+ struct bfd_link_info *link_info,
+ struct bfd_link_order *link_order,
+ arelent *reloc,
+ bfd_byte *data,
+ unsigned int *src_ptr,
+ unsigned int *dst_ptr)
+{
+ unsigned int src_address = *src_ptr;
+ unsigned int dst_address = *dst_ptr;
+ asection *input_section = link_order->u.indirect.section;
+
+ switch (reloc->howto->type)
+ {
+ case R_W65_ABS8:
+ case R_W65_DP:
+ {
+ unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ bfd_put_8 (abfd, gap, data + dst_address);
+ dst_address += 1;
+ src_address += 1;
+ }
+ break;
+
+ case R_W65_ABS8S8:
+ {
+ unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ gap >>= 8;
+ bfd_put_8 (abfd, gap, data + dst_address);
+ dst_address += 1;
+ src_address += 1;
+ }
+ break;
+
+ case R_W65_ABS8S16:
+ {
+ unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ gap >>= 16;
+ bfd_put_8 (abfd, gap, data + dst_address);
+ dst_address += 1;
+ src_address += 1;
+ }
+ break;
+
+ case R_W65_ABS16:
+ {
+ unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+
+ bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
+ dst_address += 2;
+ src_address += 2;
+ }
+ break;
+ case R_W65_ABS16S8:
+ {
+ unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ gap >>= 8;
+ bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
+ dst_address += 2;
+ src_address += 2;
+ }
+ break;
+ case R_W65_ABS16S16:
+ {
+ unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ gap >>= 16;
+ bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
+ dst_address += 2;
+ src_address += 2;
+ }
+ break;
+
+ case R_W65_ABS24:
+ {
+ unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
+ bfd_put_8 (abfd, gap >> 16, data+dst_address + 2);
+ dst_address += 3;
+ src_address += 3;
+ }
+ break;
+
+ case R_W65_PCR8:
+ {
+ int gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ bfd_vma dot = (dst_address
+ + input_section->output_offset
+ + input_section->output_section->vma);
+
+ gap -= dot + 1;
+ if (gap < -128 || gap > 127)
+ {
+ if (! ((*link_info->callbacks->reloc_overflow)
+ (link_info, NULL,
+ bfd_asymbol_name (*reloc->sym_ptr_ptr),
+ reloc->howto->name, reloc->addend, input_section->owner,
+ input_section, reloc->address)))
+ abort ();
+ }
+ bfd_put_8 (abfd, gap, data + dst_address);
+ dst_address += 1;
+ src_address += 1;
+ }
+ break;
+
+ case R_W65_PCR16:
+ {
+ bfd_vma gap = bfd_coff_reloc16_get_value (reloc, link_info,
+ input_section);
+ bfd_vma dot = (dst_address
+ + input_section->output_offset
+ + input_section->output_section->vma);
+
+ /* This wraps within the page, so ignore the relativeness, look at the
+ high part. */
+ if ((gap & 0xf0000) != (dot & 0xf0000))
+ {
+ if (! ((*link_info->callbacks->reloc_overflow)
+ (link_info, NULL,
+ bfd_asymbol_name (*reloc->sym_ptr_ptr),
+ reloc->howto->name, reloc->addend, input_section->owner,
+ input_section, reloc->address)))
+ abort ();
+ }
+
+ gap -= dot + 2;
+ bfd_put_16 (abfd, gap, data + dst_address);
+ dst_address += 2;
+ src_address += 2;
+ }
+ break;
+ default:
+ printf (_("ignoring reloc %s\n"), reloc->howto->name);
+ break;
+
+ }
+ *src_ptr = src_address;
+ *dst_ptr = dst_address;
+}
+
+#define coff_reloc16_extra_cases w65_reloc16_extra_cases
+#define coff_reloc16_estimate w65_reloc16_estimate
+
+#ifndef bfd_pe_print_pdata
+#define bfd_pe_print_pdata NULL
+#endif
+
+#include "coffcode.h"
+
+#undef coff_bfd_get_relocated_section_contents
+#undef coff_bfd_relax_section
+#define coff_bfd_get_relocated_section_contents \
+ bfd_coff_reloc16_get_relocated_section_contents
+#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
+
+CREATE_LITTLE_COFF_TARGET_VEC (w65_vec, "coff-w65", BFD_IS_RELAXABLE, 0, '_', NULL, COFF_SWAP_TABLE)
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-20 05:21:05 +0000